Improvement in tire-setting machines



|. H. SPELMAN.

Tire-Setting Machine.

N0.167,798, I Patented Sept-14,1875.

ATTORN EYS WITNESSES- I NVENTCR y I N. PETERS, PHOTWLITHOGRAPHER, WASHINGTON. I10.

To all whom it may concern UNITED STATES PATENT OFFICE IRWIN ,H; 'SPELMAN, on CORTLAND, OHIO.

IMPROVEMENTIN TIRE-SETTING MACHINES.

Specification forming part of Letters Patent No. 167,798, dated September 14, 1875; application filed July 3, 1875.

Be it known that I, IRWIN H. SPELMAN, of Cortland, in the county of Trumbull and State of Ohio, have invented a new and valuable Improvement in Tire-Setting Machines; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation vof the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a plan view of my device; and Figs. 2 and 3 are detail views of the same.

This invention relates to tire-setting machines and it consists in the construction and, novel arrangement of the U -shaped spoke-plate, its slide-block and fasteningwedge, in connection with the set-screws and swivel-caps, all as will be hereafter fully shown and described.

In the accompanying drawings, the letter A designates a U-shaped spoke-plate, which is provided with ears or projections a, through which the set-screws 12 pass. It is also provided with slots 0, which are cut in each side of the spoke-plate near the center, and directly opposite, for the reception of the wedge e, as shown in Fig. 2. dis a slideblock, which is constructed so as to fit in between the sides of the spoke-plate, and is provided with two grooves, one, f, being formed longitudinally to fit the spoke, and the other, lo, @ranged transversely on the back of the block So as to receive the wedge e, which passes through the spoke-plate and prevents the slide-block from slipping up or down. When the wedge is forced against the slide-block the pressure will be upon the center. I

The lugs or ears of the U-shaped spokeplate are provided with threads 'for engage- I 'ment with the two set-screws g, which have at their ends revolving or swiveled caps 3 held in place by screw-pins, which fit into annular grooves formed upon the ends of the set-screws. The other ends of the set-screws are provided with wrench-heads whereby they may be turned.

The mode of operation is as follows: I remove the wedge e and slip the slide-block out. I then place the spoke-plate around the spoke and replace the slide-block, and force the Wedge 0 through the slots in the spoke-plate A, after whichthe wedge is driven firmly in place by a few light blows on its larger end, thereby securing the whole machine rigidly in place upon the spoke near the fellies of the wheel. I then turn the set-screws and force the swivel-caps against the fellies, causing a space to be made between the spokes and fellies, which being filled with a suitable substance, such as tarred twine, will tighten the wheel and prevent rattling.

I am aware that a tire-tightener, having jaws, slide-blocks, set-screws with swivel-caps, and hinged staple, as shown in Letters Patent granted to W. D. G. Quigley, dated April 15, 1873, No. 137.957, is not new, and there-' fore I do not claim such invention broadly; but

What I claim as new, and desire to secure by Letters Patent, is

The U shaped spoke-plate A, having threaded ears or a and slots 0, the slide-blockd, having grooves f k, the set-screws g. having swivel-caps y, and the wedge c, all constructed and combined as described.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

IRWIN H. 'SPELMAN. Witnesses: W. A. CRAFT, T. HILLooK. 

